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A new species of Cirratulidae (Polychaeta) with characteristics of three genera, and a key to the known species around Mar del Plata (south-western Atlantic)

Published online by Cambridge University Press:  11 February 2011

Rodolfo Elías  and
María Silvia Rivero
Rodolfo Elías*
Affiliation:
Laboratorio de Bioindicadores Bentónicos, Departamento de Ciencias Marinas, Universidad Nacional de Mar del Plata, Deán Funes 3350. B 7602–AYL, Mar del Plata, Argentina
María Silvia Rivero
Affiliation:
Laboratorio de Bioindicadores Bentónicos, Departamento de Ciencias Marinas, Universidad Nacional de Mar del Plata, Deán Funes 3350. B 7602–AYL, Mar del Plata, Argentina
*
Correspondence should be addressed to: R. Elías, Laboratorio de Bioindicadores Bentónicos, Departamento de Ciencias Marinas, Universidad Nacional de Mar del Plata, Deán Funes 3350. B 7602–AYL, Mar del Plata, Argentina email: roelias@mdp.edu.ar
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Abstract

Assessing and monitoring the environmental impact off Mar del Plata (38°S 57°W) led to the need to identify the cirratulid polychaetes. Cirratulids are indicators of moderately impacted areas or early indicators of organic contamination. Some subtidal sand patches affected by sewage discharge have high abundances of a new, rare and difficult to place species, such as Caulleriella trispina sp. nov. This species is characterized by having characters of three bitentaculate cirratulid genera, including three kinds of spines: unidentate, sub-bidentate and bidentate. The genera and their taxonomic characters are discussed as well as the need for monitoring and environmental assessments for correct identification. A key to the known species from the warm-temperate region of Argentine Cirratulidae is given.

Keywords

PolychaetaCirratulidaeCaulleriellasewage pollutionindicatormonitoringsouth-western Atlantic
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 91 , Issue 7 , November 2011 , pp. 1529 - 1535
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

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